Possible Clues:

• "Heck yeah!"
• "Darn tootin'!"
• "You're so right!"
• 'Uh-huh, you said it!'
• 'Yup, absolutely right'
• 'You ain't lyin'!'
• “You said it!”
• “This guy gets it!”
• Slangy affirmation
• 'You said it!'